Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Solar Images Wednesday, 7 February 2024

‹ 06.02.2024 2024 08.02.2024 ›

Photosphere sunspot drawing and RDS evaluation

07.02.2024 photosphere drawing

High-resolution scan (3235 px)

Time
08:05 UT
Observer
Hikmet ÇAKMAK
g
10
f
60
R
160
Seeing
3 / 5

Sunspot groups and observation details →

Sunspot groups (from the drawing)

Group 1 · AR_ – 3Group 1 · AR_ – 3 Group 2 · BXI – 5Group 2 · BXI – 5 Group 3 · ?__ – 4Group 3 · ?__ – 4 Group 4 · CAO – 2Group 4 · CAO – 2 Group 5 · AX_ – 1Group 5 · AX_ – 1 Group 6 · AX_ – 2Group 6 · AX_ – 2 Group 7 · HA_ – 3Group 7 · HA_ – 3 Group 8 · FKC – 38Group 8 · FKC – 38 Group 9 · AX_ – 1Group 9 · AX_ – 1 Group 10 · AX_ – 1Group 10 · AX_ – 1
RDS data file (.gzd) 
[Gözlem]
Tarih=7.02.2024
Saat=08:05
Gözlemci=Hikmet ÇAKMAK
KontrolEden=Burçin TANIK
Durumaçısı=-14.44
Enlemaçısı=-6.39
Boylamaçısı=95.8
Boylamfark=2
GKalite=3
GDurum=G.T , H.S
Kuzeyaçısı=-0.4
Sırano=19914
AyRasatNo=6
RasatÖnceki=06.02.2024
RasatSonraki=08.02.2024

[Leke Grupları]
Grupsayısı=10:2:8
LekeSayısı=60:8:52
RölatifSayı=160:28:132
01=AR_ 03 +16.980 -03.761 092.390 +0.000 0000 0 +16.617 -02.560 +15.580 -04.962 +16.980 -03.600 +16.980 -04.462
02=BXI 05 +24.158 -05.160 090.640 17.880 0000 0 +25.168 -02.528 +23.148 -07.793 +23.354 -03.400 +24.805 -07.546
03=?__ 04 -36.759 +77.120 172.920 +0.000 0000 0 -34.537 +80.393 -38.981 +73.846 -36.759 +79.894 -36.759 +74.347
04=CAO 02 -12.690 +66.578 162.378 29.534 0000 0 -10.994 +69.149 -14.386 +64.700 -11.802 +68.580 -13.598 +64.884
05=AX_ 01 -12.300 +51.800 146.808 -1.000 0000 0 -12.300 +51.800 -12.300 +51.800
06=AX_ 02 -17.171 +46.824 142.624 +0.000 0000 0 -16.402 +47.718 -17.941 +45.930 -17.171 +47.218 -17.171 +46.430
07=HA_ 03 -17.110 +06.110 101.910 +0.000 0000 0 -15.995 +07.917 -18.280 +04.302 -17.110 +07.418 -17.110 +04.803
08=FKC 38 -14.557 -42.201 053.599 15.895 0000 0 -10.440 -34.163 -19.700 -50.238 -14.239 -37.673 -17.379 -48.782
09=AX_ 01 -04.428 -49.928 045.872 -1.000 0000 0 -04.428 -49.928 -04.428 -49.928
10=AX_ 01 -09.898 -55.927 039.873 -1.000 0000 0 -09.898 -55.927 -09.898 -55.927
20240207.gzd

Chromosphere (H-α) FITS frames

H-α

The images are made automatically with a fixed, gentle rule: uneven illumination and most of the limb darkening are removed, and the brightness is shown on a linear scale (no sharpening); prominences get their own scale outside the limb. Frames are ordered by sharpness (seeing); frames without the Sun (darks, bias) come last. Method →

2024/20240207_hc · HC · 8 frames · 171.4 MB · 08:12:14–08:46:13 UT

08:46:13 UT · 25 ms 08:12:14 UT · 30 ms 08:36:34 UT · 25 ms 08:18:24 UT · 30 ms 08:20:12 UT · 60 ms · over-exposed 08:34:46 UT · 70 ms · over-exposed 08:23:19 UT · 70 ms · over-exposed 08:24:43 UT · 70 ms · over-exposed

Coronado H-α animations from frame sequences

No Coronado observation for this day.